Watch Ashley Graham twerk in a thong: 'I don't care how many dimples are in my booty!'

The Sports Illustrated Swimsuit Edition model shared an Instagram video of her twerking to Jennifer Lopez's "I Luh Ya Papi" on a yacht while wearing a thong from her Dreamer lingerie collection. Graham captioned the video with the hashtags, "#sizesexy" and "#beautybeyondsize."

When ET caught up Graham at the 2016 Forbes Women's Summit in New York City on Thursday, we asked her about the sexy post and she says it was all about sending a message of body positivity.

"When I'm on set, the world is my oyster and you can't tell me anything," she told ET. "I don't care how many dimples are in my booty. I'm going to be on a yacht, always dancing with all of my friends."

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Watch Ashley Graham twerk in a thong: 'I don't care how many dimples are in my booty!'

NEW YORK, NY - SEPTEMBER 14: Designer and model Ashley Graham (L) appears on the runway at the Addition Elle Presents Holiday 2016 RTW + Ashley Graham Lingerie fashion show during Style360 Fashion Week September 2016 at Metropolitan West on September 14, 2016 in New York City. (Photo by Brian Ach/Getty Images)

NEW YORK, NY - FEBRUARY 10: Model Ashley Graham attends 2015 Sports Illustrated Swimsuit Celebration at Marquee on February 10, 2015 in New York City. (Photo by Bennett Raglin/WireImage)

NEW YORK, NY - FEBRUARY 11: Model Ashley Graham attends the 2015 amfAR New York Gala at Cipriani Wall Street on February 11, 2015 in New York City. (Photo by Mike Coppola/WireImage)

NEW YORK, NY - APRIL 02: Model Ashley Graham attends the FULLBEAUTY Brands Launch event at Gustavino's on April 2, 2015 in New York City. (Photo by Noam Galai/WireImage)

NEW YORK, NY - APRIL 06: Model Ashley Graham attends as Lane Bryant celebrates the launch of their campaign #ImNoAngel on April 6, 2015 in New York City. (Photo by Cindy Ord/Getty Images for #ImNoAngel Cacique Exclusively For Lane Bryant)

LONDON, ENGLAND - MAY 15: Ashley Graham attends the Cash & Rocket photocall at the London Eye Pier on May 15, 2015 in London, England. (Photo by Fred Duval/FilmMagic)

NEW YORK, NY - JUNE 20: Model Ashley Graham attends the 2015 CurvyCon at Metropolitan Pavilion on June 20, 2015 in New York City. (Photo by Bennett Raglin/WireImage)

NEW YORK, NY - SEPTEMBER 09: (EXCLUSIVE ACCESS, SPECIAL RATES APPLY) Model Ashley Graham attends the 'Patrick Demarchelier' special exhibition preview to celebrate NYFW: The Shows for Spring 2016 at Christie's on September 9, 2015 in New York City. (Photo by Mireya Acierto/Getty Images for NYFW: The Shows)

NEW YORK, NY - SEPTEMBER 14: Model Ashley Graham attends the Lane Bryant launch of the #PlusIsEqual campaign at Times Square on September 14, 2015 in New York City. (Photo by Monica Schipper/Getty Images for Lane Bryant)

NEW YORK, NY - SEPTEMBER 14: Ashley Graham attends the Us Weekly Fashion Week At KIA STYLE360 At Row NYC on September 14, 2015 in New York City. (Photo by Thomas Concordia/WireImage for STYLE360)

NEW YORK, NY - SEPTEMBER 15: Model/designer Ashley Graham walks down the runway during the Addition Elle/Ashley Graham Lingerie Collection fashion show during the Spring 2016 Style 360 on September 15, 2015 in New York City. (Photo by Fernando Leon/Getty Images)

NEW YORK, NY - SEPTEMBER 15: Ashley Graham walks the runway as Addition Elle presents Fall/Holiday 2015 RTW and Ashley Graham Lingerie Collection At KIA STYLE360 on September 15, 2015 in New York City. (Photo by Thomas Concordia/WireImage for STYLE360)

NEW YORK, NY - SEPTEMBER 15: Model Ashley Graham attends the Milly By Michelle Smith Fashion Show during Spring 2016 New York Fashion Week at Art Beam on September 15, 2015 in New York City. (Photo by Ben Gabbe/Getty Images)

NEW YORK, NY - SEPTEMBER 16: Model Ashley Graham attends 2015 Harper's BAZAAR ICONS Event at The Plaza Hotel on September 16, 2015 in New York City. (Photo by Gilbert Carrasquillo/Getty Images)

NEW YORK, NY - JANUARY 28: Model Ashley Graham attends the NYDJ 2016 Fit To Be Campaign Launch at Lord & Taylor on January 28, 2016 in New York City. (Photo by Ben Gabbe/Getty Images)

NEW YORK, NY - JANUARY 28: Plus-size model Ashley Graham attends the NYDJ 2016 Fit To Be Campaign Launch at Lord & Taylor on January 28, 2016 in New York City. (Photo by Randy Brooke/FilmMagic)

NEW YORK, NEW YORK - JANUARY 28: Model Ashley Graham attends the Forbes 30 Under 30 cocktail reception at Forbes Building on January 28, 2016 in New York City. (Photo by Noam Galai/WireImage)

NEW YORK, NY - FEBRUARY 16: Sports Illustrated Cover Girl Ashley Graham visits at SiriusXM Studios on February 16, 2016 in New York City. (Photo by Rommel Demano/Getty Images)

NEW YORK, NY - AUGUST 25: Ashley Graham arrives at Chelsea Piers for The America's Next Top Model on August 25, 2016 in New York City. (Photo by Robert Kamau/GC Images)

NEW YORK, NY - AUGUST 25: Ashley Graham arrives at Chelsea Piers for The America's Next Top Model on August 25, 2016 in New York City. (Photo by Robert Kamau/GC Images)

NEW YORK, NY - AUGUST 25: Ashley Graham arrives at Chelsea Piers for The America's Next Top Model on August 25, 2016 in New York City. (Photo by Robert Kamau/GC Images)

NEW YORK, NY - SEPTEMBER 14: Model Ashley Graham poses backstage before the Addition Elle/Ashley Graham Lingerie Collection fashion show during the Holiday 2016 Style 360 NYFW at Metropolitan West on September 14, 2016 in New York City. (Photo by Mireya Acierto/Getty Images)

NEW YORK, NY - SEPTEMBER 11: Ashley Graham attends Prabal Gurung - Front Row - September 2016 - New York Fashion Week: The Shows at The Gallery, Skylight at Clarkson Sq on September 11, 2016 in New York City. (Photo by Jared Siskin/Patrick McMullan via Getty Images)

NEW YORK, NY - SEPTEMBER 10: Ashley Graham attends the Charlotte Tilbury party at the Samsung space on September 10, 2016 in New York City. (Photo by Pierre Suu/GC Images)

NEW YORK, NY - SEPTEMBER 10: Ashley Graham attends the Christian Siriano fashion show during New York Fashion Week September 2016 at ArtBeam on September 10, 2016 in New York City. (Photo by Paul Zimmerman/WireImage)

NEW YORK, NY - SEPTEMBER 09: Model Ashley Graham attends Harper's BAZAAR Celebrates 'ICONS By Carine Roitfeld' at The Plaza Hotel on September 9, 2016 in New York City. (Photo by Gilbert Carrasquillo/Getty Images)

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It's a message the 28-year-old cover girl has been trumpeting since she blew up in the modeling industry, and one of the reasons she told ET that she hates the term "plus-size."

"The things that I don't necessarily like about it is all the negative stigmatisms that go with the word plus-size -- you're fat, you're lazy, you have no drive, no determination, you're constantly eating," she explained. "Honey, I work out. I work out three days a week. I lift. I do barre. I do it all. It's the stereotypes. That's what I really don't like. I am me. Take it or leave it."

ET recently sat down with Graham and she exclusively opened up about her insecurities, her views on dieting and when she's OK with Photoshop. Find out what she said in the video below.